Right Intentions but Wrong Timing

There are instances when one feels when even with right intentions,one ends up being crucified for what one does.sometimes it just happens and when you are at the receiving end you realise how bad things can be.Its like a lump starts to form and grow and grow.....you keep wondering whether you could have handled things better or was it just meant to be so...You keep hoping that someday,someday people would understand but then you realise that some doors have been closed forever even though you didn't want them to.The question is simpler than these thoughts....its a basic one..Why is it that assumptions are always hinged on someone doing something wrong???....